196 lines
4.9 KiB
Text
196 lines
4.9 KiB
Text
================================================================================
|
|
empty
|
|
================================================================================
|
|
DO $$ BEGIN END $$;
|
|
--------------------------------------------------------------------------------
|
|
|
|
(source_file
|
|
(do_block
|
|
(block
|
|
(dollar_quote)
|
|
(body)
|
|
(dollar_quote))))
|
|
|
|
================================================================================
|
|
empty(1)
|
|
================================================================================
|
|
DO $$ DECLARE BEGIN END $$;
|
|
--------------------------------------------------------------------------------
|
|
|
|
(source_file
|
|
(do_block
|
|
(block
|
|
(dollar_quote)
|
|
(declarations)
|
|
(body)
|
|
(dollar_quote))))
|
|
|
|
================================================================================
|
|
many declare(s)
|
|
================================================================================
|
|
DO $$
|
|
DECLARE one text;
|
|
DECLARE
|
|
name foo%TYPE;
|
|
age bar%ROWTYPE;
|
|
BEGIN END
|
|
$$;
|
|
--------------------------------------------------------------------------------
|
|
|
|
(source_file
|
|
(do_block
|
|
(block
|
|
(dollar_quote)
|
|
(declarations
|
|
(var_definition
|
|
(var_declaration
|
|
(identifier)
|
|
(identifier))))
|
|
(declarations
|
|
(var_definition
|
|
(var_declaration
|
|
(identifier)
|
|
(identifier)))
|
|
(var_definition
|
|
(var_declaration
|
|
(identifier)
|
|
(identifier))))
|
|
(body)
|
|
(dollar_quote))))
|
|
|
|
================================================================================
|
|
declare variables
|
|
================================================================================
|
|
DO $$
|
|
DECLARE
|
|
name text;
|
|
age bigint;
|
|
BEGIN END
|
|
$$;
|
|
--------------------------------------------------------------------------------
|
|
|
|
(source_file
|
|
(do_block
|
|
(block
|
|
(dollar_quote)
|
|
(declarations
|
|
(var_definition
|
|
(var_declaration
|
|
(identifier)
|
|
(identifier)))
|
|
(var_definition
|
|
(var_declaration
|
|
(identifier)
|
|
(identifier))))
|
|
(body)
|
|
(dollar_quote))))
|
|
|
|
================================================================================
|
|
declare with assignment
|
|
================================================================================
|
|
DO $$
|
|
DECLARE
|
|
name text := 'hello';
|
|
age bigint:= (SELECT foo() + 1);
|
|
BEGIN END
|
|
$$;
|
|
--------------------------------------------------------------------------------
|
|
|
|
(source_file
|
|
(do_block
|
|
(block
|
|
(dollar_quote)
|
|
(declarations
|
|
(var_definition
|
|
(var_declaration
|
|
(identifier)
|
|
(identifier))
|
|
(string))
|
|
(var_definition
|
|
(var_declaration
|
|
(identifier)
|
|
(identifier))
|
|
(select_statement
|
|
(select_item
|
|
(op_expression
|
|
(function_call
|
|
(identifier))
|
|
(number))))))
|
|
(body)
|
|
(dollar_quote))))
|
|
|
|
================================================================================
|
|
perform
|
|
================================================================================
|
|
DO $$
|
|
BEGIN
|
|
PERFORM foo();
|
|
END
|
|
$$;
|
|
--------------------------------------------------------------------------------
|
|
|
|
(source_file
|
|
(do_block
|
|
(block
|
|
(dollar_quote)
|
|
(body
|
|
(perform_statement
|
|
(select_item
|
|
(function_call
|
|
(identifier)))))
|
|
(dollar_quote))))
|
|
|
|
================================================================================
|
|
many statements
|
|
================================================================================
|
|
DO $$
|
|
BEGIN
|
|
SELECT 1;
|
|
foo.bar = lower(foo.baz);
|
|
foo.bar := lower(foo.baz);
|
|
RETURN 2;
|
|
END
|
|
$$;
|
|
--------------------------------------------------------------------------------
|
|
|
|
(source_file
|
|
(do_block
|
|
(block
|
|
(dollar_quote)
|
|
(body
|
|
(select_statement
|
|
(select_item
|
|
(number)))
|
|
(assign_statement
|
|
(identifier)
|
|
(function_call
|
|
(identifier)
|
|
(identifier)))
|
|
(assign_statement
|
|
(identifier)
|
|
(function_call
|
|
(identifier)
|
|
(identifier)))
|
|
(return_statement
|
|
(number)))
|
|
(dollar_quote))))
|
|
|
|
================================================================================
|
|
function call with select
|
|
================================================================================
|
|
DO $$ BEGIN perform exists(select 1); END $$;
|
|
--------------------------------------------------------------------------------
|
|
|
|
(source_file
|
|
(do_block
|
|
(block
|
|
(dollar_quote)
|
|
(body
|
|
(perform_statement
|
|
(select_item
|
|
(function_call
|
|
(identifier)
|
|
(select_statement
|
|
(select_item
|
|
(number)))))))
|
|
(dollar_quote))))
|